Merge pull request #17080 from TheophileMot/gimbal-lock-precision

Euler: Fix gimbal lock precision

Author: mrdoob

src/math/Euler.js

@@ -149,7 +149,7 @@ Object.assign( Euler.prototype, {
 
 			this._y = Math.asin( clamp( m13, - 1, 1 ) );
 
-			if ( Math.abs( m13 ) < 0.99999 ) {
+			if ( Math.abs( m13 ) < 0.9999999 ) {
 
 				this._x = Math.atan2( - m23, m33 );
 				this._z = Math.atan2( - m12, m11 );
@@ -165,7 +165,7 @@ Object.assign( Euler.prototype, {
 
 			this._x = Math.asin( - clamp( m23, - 1, 1 ) );
 
-			if ( Math.abs( m23 ) < 0.99999 ) {
+			if ( Math.abs( m23 ) < 0.9999999 ) {
 
 				this._y = Math.atan2( m13, m33 );
 				this._z = Math.atan2( m21, m22 );
@@ -181,7 +181,7 @@ Object.assign( Euler.prototype, {
 
 			this._x = Math.asin( clamp( m32, - 1, 1 ) );
 
-			if ( Math.abs( m32 ) < 0.99999 ) {
+			if ( Math.abs( m32 ) < 0.9999999 ) {
 
 				this._y = Math.atan2( - m31, m33 );
 				this._z = Math.atan2( - m12, m22 );
@@ -197,7 +197,7 @@ Object.assign( Euler.prototype, {
 
 			this._y = Math.asin( - clamp( m31, - 1, 1 ) );
 
-			if ( Math.abs( m31 ) < 0.99999 ) {
+			if ( Math.abs( m31 ) < 0.9999999 ) {
 
 				this._x = Math.atan2( m32, m33 );
 				this._z = Math.atan2( m21, m11 );
@@ -213,7 +213,7 @@ Object.assign( Euler.prototype, {
 
 			this._z = Math.asin( clamp( m21, - 1, 1 ) );
 
-			if ( Math.abs( m21 ) < 0.99999 ) {
+			if ( Math.abs( m21 ) < 0.9999999 ) {
 
 				this._x = Math.atan2( - m23, m22 );
 				this._y = Math.atan2( - m31, m11 );
@@ -229,7 +229,7 @@ Object.assign( Euler.prototype, {
 
 			this._z = Math.asin( - clamp( m12, - 1, 1 ) );
 
-			if ( Math.abs( m12 ) < 0.99999 ) {
+			if ( Math.abs( m12 ) < 0.9999999 ) {
 
 				this._x = Math.atan2( m32, m22 );
 				this._y = Math.atan2( m13, m11 );